Laser Leak Monitoring System Solution for Pressure Regulating Boxes Background Overview
Urban areas are crisscrossed with numerous gas pipelines and dotted with pressure regulating boxes/cabinets. Once a leak occurs at these locations, gas accumulation can easily trigger combustion or explosion accidents. Therefore, real-time leak monitoring of these pressure regulating boxes is crucial.
Current traditional chemical reaction-based monitoring equipment has multiple drawbacks. Laser absorption spectroscopy technology is the most advanced gas detection technology available today, and the laser leak monitoring system developed based on this technology can effectively address the limitations of traditional equipment, enabling real-time online monitoring of leaks from pressure regulating boxes.The laser leak monitoring system for pressure regulating boxes consists of IoT-based laser methane leak monitors installed on-site and management platform software. The detector adopts a highly integrated design, integrating laser emission, control, and spectral analysis into a single module to achieve complete laser absorption spectroscopy-based methane detection. Its unique modular design allows it to function either as an independent fixed-point laser methane leak monitoring sensor or directly replace the detection component of traditional methane detectors for product upgrades.
(I) IoT-Based Laser Methane Leak Monitor
The IoT-based laser methane leak monitor comprises a fixed-point laser methane leak monitoring sensor and a communication & energy management module. It features a compact size, easy installation, and ultra-low power consumption, supporting two power supply modes: battery-powered or solar-powered.
Combined with NB-IoT wireless communication technology, it transmits detected gas concentration data to a remote monitoring center. Users can access the data via management platform software, enabling centralized management and real-time online monitoring of pressure regulating boxes/cabinets scattered across various locations.
(II) Fixed-Point Laser Methane Leak Monitoring Sensor
The fixed-point laser methane leak monitoring sensor is responsible for laser control, concentration signal collection, and spectral analysis. Installed 10-20 cm from the top inside the pressure regulating cabinet, it connects to the communication & energy management module via a built-in cable. This device is designed with safety and explosion-proof features.
(III) Communication & Energy Management Module
The communication & energy management module supplies power to the fixed-point laser methane leak monitoring sensor, charges the battery via solar energy, receives concentration data output by the sensor, and uploads the monitoring data to the software platform through NB-IoT. This module is installed outside the pressure regulating cabinet.
Working Mechanism
The device collects gas concentration data in the monitored environment every hour and transmits it via NB-IoT wireless communication. For battery-powered operation, to extend battery life, the device collects gas concentration data hourly and transmits the accumulated data for the period centrally via NB-IoT.
Remote Monitoring Platform
At the remote monitoring center, the management platform software graphically displays the locations, real-time concentration data, alarm information, operating status, and fault conditions of all laser methane detectors on a map. It also provides historical data, allowing users to obtain concentration change trends and alarm information of each monitoring point through big data analysis.
